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Mac OS 10.14 unsupported and converting to Firefox ESR- How to import my browser data from my old Firefox?

  • 3 replies
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  • 26 views
  • Last reply by AliceWyman

allen45
allen45
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I have Mac OS 10.14.6, so Firefox stopped working with its latest update. So I downloaded Firefox ESR. I want my passwords, history, and browser data from my original firefox, but when I go to the Import Browser Data function, my original firefox is not listed as an option to import from. And I can't launch my old firefox in order to export the data to an html file. So what can I do? Thanks!

I have Mac OS 10.14.6, so Firefox stopped working with its latest update. So I downloaded Firefox ESR. I want my passwords, history, and browser data from my original firefox, but when I go to the Import Browser Data function, my original firefox is not listed as an option to import from. And I can't launch my old firefox in order to export the data to an html file. So what can I do? Thanks!

All Replies (3)

t.r.ernst
t.r.ernst
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Assuming you didn't manually delete the folder containing your old profile data, it should still exist on your computer's hard drive. The article Recovering important data from an old profile contains instructions on how to find it and move it over to your current profile.

AliceWyman
AliceWyman
  • Moderator
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The article linked by t.r.ernst explains how to copy selected files from an old profile, including bokmarks and other important data.

You can try to restore your entire old profile by setting it as the default profile in the about:profiles page. See Recover user data missing after Firefox update for details.

AliceWyman
AliceWyman
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P.S. You said Firefox stopped working with the latest update. Was this Firefox version 116 by any chance? If so, make sure that the old profile works by using the [Launch profile in new browser] button in about:profiles before setting it as the default profile. See https://support.mozilla.org/en-US/kb/dedicated-profiles-firefox-installation#w_what-happens-to-my-profile-if-i-downgrade-to-a-previous-version-of-firefox